20 research outputs found
Simulations of the Evolution of the Heterophase Electrode of a Vacuum Transmission Line During the Passage of a High Current Pulse
Influence of nonuniformities of a magnetic-mirror field on the space-time characteristics of a long-pulse relativistic electron beam
Transportation properties of a high-current magnetically insulated transmission line and dynamics of the electrode plasma
Deuterated fibre Z-pinch on the S-300 generator
Dense Z-pinch experiments were carried out on the S-300 generator (3.5 MA, 100 ns, 0.15 Omega) at the Kurchatov Institute in Moscow. The experiments were performed at a peak current of 2 MA with a rise time of about 100 ns. The Z-pinch was formed from a deuterated polyethylene fibre of 100 mu m diameter and 1 cm length. The optical emission began early in the discharge and the coronal plasma expanded with a radial velocity of about 2 x 10(6) cm s(-1). The optical and XUV emission continued for several hundreds of nanoseconds. The peak power of sub-keV radiation reached 30 GW near the maximum current. The total emitted energy exceeded 5 kJ. The neutron yield from the D-D reaction reached 2 x 10(7) per shot. The mean energy of neutrons obtained from time-of-flight analysis in the axial (downstream) direction was near 2.45 MeV
Study of the Compression of a Condensed Deuterated Target Installed on the Wire Array Axis
Absorption in laser structures with coupled and uncoupled quantum dots in an electric field at room temperature
Measuring of spatio-temporal characteristics Z-pinch from deuterated polyethylene
On the S-300 installation at currents up to 2 MA with rise time 100 ns, the investigation of the formation process of high-temperature plasma in fast Z-pinch was carried out. The central part of the loads was made from agar-agar and represented a deuterated polyethylene cylinder with small density 50 and 75 mg/sm3 and 1–2 mm diameter. On the ICT images, obtained in optical and soft X-ray range of a spectrum with 3–5 ns exposition, it is visible that on the axis of the polyethylene cylinder at the current`s rise time a cord is formed and it is separated into bright formations. They were observed on a background of a luminous area which occupied the initial neck volume. On time-integrated pinhole pictures obtained in SXR range (E > 1–4 keV), hot points with minimal size of 50 microns were registered. From the chronograms results, obtained by means of the optical high-speed-streak camera mount along the neck axis with time resolution 1 keV with short duration of 2–4 ns. Simultaneously with X-ray radiation neutrons with the maximal yield of 4.5×109 were registered. The average energy measured in 4 directions under angles with an axis of: 0○ (above the anode), 90○, 180○ (under the cathode) and 270○, were accordingly: 2.4±0.2, 2.5±0.1, 2.5±0.1, 2.5±0.1 MeV